[R] is.matrix(), as.matrix, & as(,"matrix")

[Gabor Grothendieck]

John Maindonald <john.maindonald <at> anu.edu.au> writes:

: I often want to use xtable() with tables.  There is no method
: defined for the class "table".  After a bit of rummaging, I found
: that I can use:
: xtable(as(tab, "matrix")).

That's probably ok for most practical purposes but it will
not preserve the table's dnn, if it has one:

R> tab <- table(1:3, dnn = "A")
R> tab  # dnn present
A
1 2 3 
1 1 1 
R> as.matrix(tab)  # dnn gone
  [,1]
1    1
2    1
3    1